Tubular key casing



FIG. 1 is a perspective view of a tubular key casing showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a left side elevation view thereof, the right side lavational view being a mirror image thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is another perspective view thereof; and,

FIG. 6 is an exploded view thereof.

The broken lines environment in FIGS. 1-4 and 6 is for illustrative purpose only and forms no part of the claimed design. 

CLAIM The ornamental design for a tubular key casing, as shown and described. 